3D Facemask Assembly With Replaceable Filter and Sealed Fit
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Solution Overview
Problem
Existing facemasks often fail to provide a comfortable, sealed fit and efficient filtration, especially when worn for extended periods, and lack a convenient mechanism for replacing filters.
Innovation Solution
A three-dimensional facemask assembly with a shaped panel and a stiffening insert, featuring a continuous, non-perforated filter that can be easily inserted or replaced, and secured with magnetic or elastic attachments, ensuring a comfortable, sealed fit and effective filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a facemask is designed with a three-dimensional shape and stiffening insert to provide a sealed fit, then the sealing performance and comfort are improved, but the device complexity increases
Solution Approach 1:
The facemask is divided into multiple panels (front panel, side panels, rear panel) that are joined together to form a three-dimensional shape. Each panel can be independently shaped and assembled, allowing the complex 3D structure to be constructed from simpler components while maintaining sealing performance against the face.
Solution Approach 2:
The facemask transitions from a flat two-dimensional structure to a three-dimensional shaped structure that conforms to the contours of the face. This dimensional change allows the mask to provide a sealed fit around the nose, cheeks, and chin while maintaining comfort during extended wear.
2Reliability
If a continuous non-perforated filter is used to provide efficient filtration, then the filtration effectiveness is improved, but the ease of operation for filter replacement deteriorates
Solution Approach 1:
The filter assembly is segmented into a continuous non-perforated filter element that can be independently inserted and removed from the facemask. This segmentation allows the filter to maintain its continuous structure for effective filtration while enabling easy replacement by simply withdrawing and inserting the filter assembly through the filter opening.
Solution Approach 2:
The filter assembly is designed to be dynamically insertable and removable from the facemask. The continuous non-perforated filter can be easily inserted into the filter opening and secured, allowing users to replace filters without complex tools or procedures while maintaining the integrity of the continuous filter structure for effective particle filtration.
3Reliability
If magnetic or elastic attachments are used to secure the filter, then the filter retention reliability is improved, but the device complexity increases
Solution Approach 1:
Traditional mechanical fastening systems (screws, clips, or complex fasteners) are replaced with magnetic or elastic attachment mechanisms. These simpler attachment methods provide reliable filter retention through magnetic attraction or elastic tension while reducing the overall device complexity and making filter replacement more user-friendly.
Data Source
AI summary
A facemask assembly has a three dimensional shape to fit a user's face while covering a user's mouth and nose and providing a space in front of the user's mouth and nostrils. The facemask assembly includes an outer shell layer and an inner lining layer connected to provide a facemask panel having the three-dimensional shape and an interior space to retain a filter. A face stiffener extends through the interior space along a mid-region and curved away from the user's mouth to assist in stiffening the facemask panel and in keeping the three-dimensional facemask shape spaced from the user's mouth. Magnets can also be used to aid is retaining the facemask assembly as a shaped unit. An adjustment tab can aid in adjusting the facemask assembly on the face. The facemask assembly can be pulled down when safe while retaining it three-dimensional shape.